I was introduced to vocaloid around late 2012-early 2013. I love it! and other vocal synths! the majority of the music I listen to uses vocal synths and it's been a very big part of my life
favorite producers: kikuo, siinamota, nashimoto ui, pinocchioP, inabakumori, SLAVE.V-V-R, abu-se-ken, nekobolo, wowaka, hachi, kiichi, machigeritaP, sasakure.uk
favorite vocal synths: (VOCALOID) KAITO, MEIKO, kagamine rin, gakupo, GUMI, VY2, nekomura iroha, hiyama kiyoteru, utatane piko, YOHIOloid, DEX, MAIKA, (UTAU) kasane teto, yokune ruko, margaret samsa, springy cogs, keitai hakken, matsudappoiyo
KAITO is my favorite ever he makes me smile and his voice provider Naoto Fuuga is very sweet. V1 is my favorite voicebank of his I like how much sharper his voice is
if you want a really long list you can see my youtube playlist here (periodically organized by video upload date, currently at 1k+ songs)